31989040

素因数分解:

$2^4\times 5^1\times {\mathrm{281}}^1\times {\mathrm{1423}}^1$

素因数の和:1717

約数の個数: 40

約数和(自身を含む): 74691648

約数和(自身を除く): 42702608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 281, 562, 1124, 1405, 1423, 2248, 2810, 2846, 4496, 5620, 5692, 7115, 11240, 11384, 14230, 22480, 22768, 28460, 56920, 113840, 399863, 799726, 1599452, 1999315, 3198904, 3998630, 6397808, 7997260, 15994520, 31989040]

約数ペア:

[(1, 31989040), (2, 15994520), (4, 7997260), (5, 6397808), (8, 3998630), (10, 3198904), (16, 1999315), (20, 1599452), (40, 799726), (80, 399863), (281, 113840), (562, 56920), (1124, 28460), (1405, 22768), (1423, 22480), (2248, 14230), (2810, 11384), (2846, 11240), (4496, 7115), (5620, 5692)]